The story is set in London and follows Katrielle as she solves mysteries with her talking dog Sherl.
| Sound | Yusuke Inada | Sound Effects |
| Art | Takamasa Nakakuki | Art Direction |
| Camera | Ayumi Okano | Director of Photography |
| Writing | Akihiro Hino | Series Composition |
| Editing | Kiyoshi Hirose | Editor |
| Sound | Ryo Tanaka | Sound Director |
| Directing | Susumu Mitsunaka | Series Director |
| Sound | Tomohito Nishiura | Original Music Composer |
| Art | Takayuki Onoda | Prop Designer |
| Visual Effects | Yoko Takada | Character Designer |
| Directing | migmi | Assistant Director |
| Visual Effects | Takahiro Mogi | Color Designer |
| Editing | Misaki Enokida | Editor |
